Stove-pipe damper



w. H. NUTTING. Stove Pipe Damper. I No. 56,789 Patented July 31, 1866.

UNITE STATES PATENT OFFICE.

WILLIAM H. NUTTING, OF ORANGE, MASSACHUSETTS.

STOVE-Pl PE DAM PER.

Specification forming part of Letters Patent No. 56,789., dated July 31, 1866.

plate, provided with a square or other propershaped opening made through it, across which are arranged a series of parallel bars, a a. a a, they being disposed at equal distances apart. 0n the said plate A is a slide-plate, B, or register, made with an opening through it, provided with a series of bars across it and par allel to each other, the width of each of the said bars being equal to or about equal to that of a space between any two next adjacent bars of the corresponding opening of the disk.

A cylin drical journal, 0, is extended from the periphery of the disk in manner as represented, and opposite this journal theodisk has a cylindrical swell or shoulder, D, which, made as rep-- resented, is for reception of a journal, E, which is to be screwed into the said swell, and so as to project from it or the disk in manner as represented.

The register or valve-plateB is to slide freely lengthwise on the disk, it being held in place thereon by a series of starts or projections, d d d (1, extending from the disk, and so as to overlap the plate B at its opposite edge. The swell D and the journal 0 also serve as stops to arrest the movement of the register-valve B, which is formed with recesses or notches e f to enable it to move the required distance in either direction before being stopped by the Swell or the journal.

The plate B also has a series of notches, g g g 9, formed in it at its opposite sides or edges, the same being to enable it to be passed underneath the starts or projections d d d (I, so as to rest against that side of the disk from which such studs are extended. Were it not for their notches g g g g, the journal 0 would prevent the plate B from being introduced underneath the starts.

A rod, F, provided with a handle, G, slides freely through the journal '0, and is screwed into the plate B. By means of such rod and handle the damper may be revolved on its axis and the register-slide may be moved on the diskthat is, so as to open or close the passages between the bars thereof.

The bars in transverse section may each be either square, rectangular, or curved, as represented in the drawings.

By means of the register connected with the damper, such register being composed of the slide-plate and its bars, I can vary the openings for the escape of smoke without turning the damper when it may be at right angles to the axis of and is employed in the smoke-pipe of a stove.

I claim- The combination and arrangement of the series of starts d d d d and the series of notches g g g g with the damper and register-slider and the swell D and journal 0, applied to the damper, as set' forth.

WM. H. NUTTING.

Witnesses J. M. HOWARD, G. W. DEXTER. 

